A man may be preferred to a woman by an employer who will make a substantial investment in the training of the employee because
a. most employers are sexist and think that women belong in the home caring for children.
b. as a group women tend to have a weaker attachment to the labor force than men.
c. employers have observed that women are less productive than men on most jobs.
d. employers are afraid women will disrupt the workplace by distracting the male employees.